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Journal articles on the topic 'Unstructured Grid Generation'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

Löhner, Rainald, Jose Camberos, and Marshal Merriam. "Parallel unstructured grid generation." Computer Methods in Applied Mechanics and Engineering 95, no. 3 (1992): 343–57. http://dx.doi.org/10.1016/0045-7825(92)90192-m.

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2

Evazi, M., and H. Mahani. "Unstructured-Coarse-Grid Generation Using Background-Grid Approach." SPE Journal 15, no. 02 (2010): 326–40. http://dx.doi.org/10.2118/120170-pa.

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Summary Reservoir flow simulation involves subdivision of the physical domain into a number of gridblocks. This is best accomplished with optimized gridpoint density and a minimized number of gridblocks, especially for coarse-grid generation from a fine-grid geological model. In any coarse-grid generation, proper distribution of gridpoints, which form the basis of numerical gridblocks, is a challenging task. We show that this can be achieved effectively by a novel grid-generation approach based on a background grid that stores gridpoint spacing parameters. Spacing parameter (L) can be describe

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3

Suzuki, Masahiro. "Surface grid generation based on unstructured grids." AIAA Journal 29, no. 12 (1991): 2262–64. http://dx.doi.org/10.2514/3.10869.

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4

Henshaw, William D. "Automatic grid generation." Acta Numerica 5 (January 1996): 121–48. http://dx.doi.org/10.1017/s0962492900002634.

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Current methods for the automatic generation of grids are reviewed. The approaches to grid generation that are discussed include Cartesian, multi-block-structured, overlapping and unstructured. Emphasis is placed on those methods that can create high-quality grids appropriate for the solution of equations of a hyperbolic nature, such as those that arise in fluid dynamics. Numerous figures illustrate the different grid generation techniques.

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5

Ghidoni, A., E. Pelizzari, S. Rebay, and V. Selmin. "3D anisotropic unstructured grid generation." International Journal for Numerical Methods in Fluids 51, no. 9-10 (2006): 1097–115. http://dx.doi.org/10.1002/fld.1151.

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6

Lauritzen, P. H., J. T. Bacmeister, P. F. Callaghan, and M. A. Taylor. "NCAR_Topo (v1.0): NCAR global model topography generation software for unstructured grids." Geoscientific Model Development 8, no. 12 (2015): 3975–86. http://dx.doi.org/10.5194/gmd-8-3975-2015.

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Abstract. It is the purpose of this paper to document the NCAR global model topography generation software for unstructured grids (NCAR_Topo (v1.0)). Given a model grid, the software computes the fraction of the grid box covered by land, the grid-box mean elevation (deviation from a geoid that defines nominal sea level surface), and associated sub-grid-scale variances commonly used for gravity wave and turbulent mountain stress parameterizations. The software supports regular latitude–longitude grids as well as unstructured grids, e.g., icosahedral, Voronoi, cubed-sphere and variable-resolutio

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Lauritzen, P. H., J. T. Bacmeister, P. F. Callaghan, and M. A. Taylor. "NCAR global model topography generation software for unstructured grids." Geoscientific Model Development Discussions 8, no. 6 (2015): 4623–51. http://dx.doi.org/10.5194/gmdd-8-4623-2015.

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Abstract. It is the purpose of this paper to document the NCAR global model topography generation software for unstructured grids. Given a model grid, the software computes the fraction of the grid box covered by land, the gridbox mean elevation, and associated sub-grid scale variances commonly used for gravity wave and turbulent mountain stress parameterizations. The software supports regular latitude-longitude grids as well as unstructured grids; e.g. icosahedral, Voronoi, cubed-sphere and variable resolution grids. As an example application and in the spirit of documenting model development

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8

ITO, Yasushi, and Kazuhiro NAKAHASHI. "Unstructured Surface Grid Generation Using GUI." Journal of the Japan Society for Aeronautical and Space Sciences 48, no. 554 (2000): 75–81. http://dx.doi.org/10.2322/jjsass.48.75.

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9

Shostko, Alexander, and Rainald Löhner. "Three-dimensional parallel unstructured grid generation." International Journal for Numerical Methods in Engineering 38, no. 6 (1995): 905–25. http://dx.doi.org/10.1002/nme.1620380603.

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10

Lu, Peng, Nianhua Wang, Yi Lin, Xiaorong Zhang, Yadong Wu, and Hongying Zhang. "A new unstructured hybrid mesh generation method based on BP-ANN." Journal of Physics: Conference Series 2280, no. 1 (2022): 012045. http://dx.doi.org/10.1088/1742-6596/2280/1/012045.

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Abstract The automation and intelligence of grid generation are still bottleneck problems in computational fluid dynamics. This problem can be solved by generating anisotropic quadrilateral by advancing layer method and isotropic triangular mesh by advancing front method. However, the advancing layer method needs to calculate the advancing direction, step size, a correction factor of the concave and convex area, so the automation level and efficiency of grid generation need to be improved. To solve the above problems, a hybrid grid generation method based on BP-ANN is proposed. The grid data g

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11

Lu, Peng, Nianhua Wang, Yi Lin, Xiaorong Zhang, Yadong Wu, and Hongying Zhang. "A new unstructured hybrid mesh generation method based on BP-ANN." Journal of Physics: Conference Series 2280, no. 1 (2022): 012045. http://dx.doi.org/10.1088/1742-6596/2280/1/012045.

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Abstract The automation and intelligence of grid generation are still bottleneck problems in computational fluid dynamics. This problem can be solved by generating anisotropic quadrilateral by advancing layer method and isotropic triangular mesh by advancing front method. However, the advancing layer method needs to calculate the advancing direction, step size, a correction factor of the concave and convex area, so the automation level and efficiency of grid generation need to be improved. To solve the above problems, a hybrid grid generation method based on BP-ANN is proposed. The grid data g

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12

Engwirda, Darren. "JIGSAW-GEO (1.0): locally orthogonal staggered unstructured grid generation for general circulation modelling on the sphere." Geoscientific Model Development 10, no. 6 (2017): 2117–40. http://dx.doi.org/10.5194/gmd-10-2117-2017.

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Abstract. An algorithm for the generation of non-uniform, locally orthogonal staggered unstructured spheroidal grids is described. This technique is designed to generate very high-quality staggered Voronoi–Delaunay meshes appropriate for general circulation modelling on the sphere, including applications to atmospheric simulation, ocean-modelling and numerical weather prediction. Using a recently developed Frontal-Delaunay refinement technique, a method for the construction of high-quality unstructured spheroidal Delaunay triangulations is introduced. A locally orthogonal polygonal grid, deriv

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13

Pirzadeh, Shahyar Z. "Advanced Unstructured Grid Generation for Complex Aerodynamic Applications." AIAA Journal 48, no. 5 (2010): 904–15. http://dx.doi.org/10.2514/1.41355.

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14

Marcum, David L. "Adaptive unstructured grid generation for viscous flow applications." AIAA Journal 34, no. 11 (1996): 2440–43. http://dx.doi.org/10.2514/3.13418.

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15

Abras, Jennifer N., C. Eric Lynch, and Marilyn J. Smith. "Computational Fluid Dynamics–Computational Structural Dynamics Rotor Coupling Using an Unstructured Reynolds-Averaged Navier–Stokes Methodology." Journal of the American Helicopter Society 57, no. 1 (2012): 1–14. http://dx.doi.org/10.4050/jahs.57.012001.

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The focus of this paper is to discuss the unique challenges introduced through the use of unstructured grids in rotorcraft computational fluid dynamics (CFD)–computational structural dynamics (CSD) coupling. The use of unstructured grid methodology in CFD has been expanding because of the advantages in grid generation and modeling of complex configurations. However, the resulting amorphous distribution of the grid points on the rotor blade surface provides no information with regard to the orientation of the blade, in direct contrast to structured grid methodology that can take advantage of th

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16

TSUBAKI, Ryota, Ichiro FUJITA, and Takeshi OKABE. "UNSTRUCTURED GRID GENERATION USING LIDAR MEASUREMENT FOR INUNDATION ANALYSIS." Doboku Gakkai Ronbunshuu B 62, no. 1 (2006): 41–52. http://dx.doi.org/10.2208/jscejb.62.41.

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17

Pirzadeh, Shahyar. "Unstructured viscous grid generation by the advancing-layers method." AIAA Journal 32, no. 8 (1994): 1735–37. http://dx.doi.org/10.2514/3.12167.

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18

Hamann, B., H. J. Thornburg, and G. Hong. "Automatic unstructured grid generation based on iterative point insertion." Computing 55, no. 2 (1995): 135–61. http://dx.doi.org/10.1007/bf02238098.

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19

Zhu, Z. Q., P. Wang, S. F. Tuo, and Z. Liu. "A structured/unstructured grid generation method and its application." Acta Mechanica 167, no. 3-4 (2004): 197–211. http://dx.doi.org/10.1007/s00707-003-0057-y.

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20

Sharov, Dmitri, Hong Luo, Joseph D. Baum, and Rainald Löhner. "Unstructured Navier-Stokes grid generation at corners and ridges." International Journal for Numerical Methods in Fluids 43, no. 6-7 (2003): 717–28. http://dx.doi.org/10.1002/fld.615.

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21

Sharma, R., and O. P. Sha. "Unstructured triangular surface grid generation and intrinsic grid analysis using rational triangular patches." Engineering Computations 22, no. 7 (2005): 745–82. http://dx.doi.org/10.1108/02644400510619521.

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22

Smith, R. J., and M. A. Leschziner. "Automatic grid generation for complex geometries." Aeronautical Journal 100, no. 991 (1996): 7–14. http://dx.doi.org/10.1017/s0001924000027202.

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AbstractA novel automatic grid generation method for complex CFD applications has been developed, driven by the need of the industrial CFD practitioner to reduce the turnaround time from an initial CAD geometry to obtaining a flow simulation. The method uses a subdivision strategy, allowing hanging nodes in a Cartesian unstructured mesh environment and is combined with a non-overlapping, semi-structured surface grid. Unusually, the surface grid is the end rather than the starting point of the present approach. This reversal of gridding strategy allows usability to be enhanced, in that the grid

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23

Marcum, David L., and Nigel P. Weatherill. "Unstructured grid generation using iterative point insertion and local reconnection." AIAA Journal 33, no. 9 (1995): 1619–25. http://dx.doi.org/10.2514/3.12701.

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24

Bahrainian, Seyed Saied, and Zahra Mehrdoost. "An automatic unstructured grid generation method for viscous flow simulations." Mathematics and Computers in Simulation 83 (September 2012): 23–43. http://dx.doi.org/10.1016/j.matcom.2012.05.021.

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25

Jahangirian, A., and Y. Shoraka. "Adaptive unstructured grid generation for engineering computation of aerodynamic flows." Mathematics and Computers in Simulation 78, no. 5-6 (2008): 627–44. http://dx.doi.org/10.1016/j.matcom.2008.04.004.

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26

Kocberber, Sait. "An Automatic Unstructured Grid Generation System for Geologically Complex Reservoirs." SPE Computer Applications 7, no. 05 (1995): 105–11. http://dx.doi.org/10.2118/28245-pa.

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27

Zheleznyakova, A. L., and S. T. Surzhikov. "Molecular dynamics-based unstructured grid generation method for aerodynamic applications." Computer Physics Communications 184, no. 12 (2013): 2711–27. http://dx.doi.org/10.1016/j.cpc.2013.07.013.

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28

Samier, Pierre, and Roland Masson. "Implementation of a Vertex-Centered Method Inside an Industrial Reservoir Simulator: Practical Issues and Comprehensive Comparison With Corner-Point Grids and Perpendicular-Bisector-Grid Models on a Field Case." SPE Journal 22, no. 02 (2017): 660–78. http://dx.doi.org/10.2118/173309-pa.

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Summary Corner-point grids (CPGs) and pillar-based unstructured grids do not provide an effective work flow for translating Earth models into simulation models. Such a work flow requires grids that allow an accurate representation of the near-well flow, preserve geological accuracy, and offer flexible resolution control. Hence, a 3D unstructured approach is required. Significant work has been performed for generating unstructured grids, and modeling hydraulic-fracture flow for gas-shale simulation has given a new impulse for unstructured gridding. Recent methods such as vertex-approximate grad

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29

Anderson, W. Kyle. "A Grid Generation and Flow Solution Method for the Euler Equations on Unstructured Grids." Journal of Computational Physics 110, no. 1 (1994): 23–38. http://dx.doi.org/10.1006/jcph.1994.1003.

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30

Bass, L., O. Nikolaeva, V. Davidenko, S. Gaifulin, A. Danilov, and A. Khmylev. "RADUGA-TV NEW GENERATION CODE FOR SOLUTION TRANSFER EQUATIONS." PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. SERIES: NUCLEAR AND REACTOR CONSTANTS 2020, no. 4 (2020): 69–77. http://dx.doi.org/10.55176/2414-1038-2020-4-69-77.

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The article discusses the issue of the concept of “new generation code”, which has been actively used recently to characterize computer programs designed to solve problems of the transfer of neutrons and gamma quanta in nuclear facilities. As an example of a new generation code developed for solving the multigroup transport equation by the grid (deterministic) method, the first version of the new software package RADUGA-TV is considered, including, in particular, the UNK complex for calculating burnup. The article lists the main features of the RADUGA-TV code: the problems to be solved, the ty

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31

Legrand, S., V. Legat, and E. Deleersnijder. "Delaunay mesh generation for an unstructured-grid ocean general circulation model." Ocean Modelling 2, no. 1-2 (2000): 17–28. http://dx.doi.org/10.1016/s1463-5003(00)00005-6.

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32

Tsubaki, Ryota, and Ichiro Fujita. "Unstructured grid generation using LiDAR data for urban flood inundation modelling." Hydrological Processes 24, no. 11 (2010): 1404–20. http://dx.doi.org/10.1002/hyp.7608.

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33

Sinha, Mourani, Ravi Kumar Yadav, and Paromita Chakraborty. "Island Modeling Using Unstructured Grid during a Tropical Storm." International Journal of Oceanography 2016 (February 15, 2016): 1–8. http://dx.doi.org/10.1155/2016/5834572.

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The coastal wave dynamics of Agatti island situated on a coral atoll in Lakshadweep, India, having a notable topographic feature of steeper eastern shore over the western shore, is analysed in this study. A multinested model setup is generated using the global third-generation models WAM (Wave Modeling) and SWAN (Simulating Waves Nearshore). A high resolution unstructured grid is generated for the domain containing the island using SMS (Surface-Water Modeling System) interpolated with merged GEBCO (General Bathymetric Chart of the Oceans) and SRTM (Shuttle Radar Topography Mission) bathymetry.

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34

Zhu, Sen, Guangming Xiong, Huiyan Chen, and Jianwei Gong. "Guidance Point Generation-Based Cooperative UGV Teleoperation in Unstructured Environment." Sensors 21, no. 7 (2021): 2323. http://dx.doi.org/10.3390/s21072323.

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Teleoperation is widely used for unmanned ground vehicle (UGV) navigation in military and civilian fields. However, the human operator has to limit speed to ensure the handling stability because of the low resolution of video, limited field of view and time delay in the control loop. In this paper, we propose a novel guidance point generation method that is well suited for human–machine cooperative UGV teleoperation in unstructured environments without a predefined goal position. The key novelty of this method is that the guidance points used for navigation can be generated with only the local

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35

Huang, C. Y., and J. T. Oden. "GAMMA2D: A multiregion/multiblock, structured/unstructured grid generation package for computational mechanics." Computers & Structures 53, no. 2 (1994): 375–410. http://dx.doi.org/10.1016/0045-7949(94)90212-7.

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36

Bahrainian, Seyed Saied, and Alireza Daneh Dezfuli. "A geometry-based adaptive unstructured grid generation algorithm for complex geological media." Computers & Geosciences 68 (July 2014): 31–37. http://dx.doi.org/10.1016/j.cageo.2014.03.017.

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37

Abbruzzese, Gennaro, Mariola Gómez, and Marta Cordero-Gracia. "Unstructured 2D grid generation using overset-mesh cutting and single-mesh reconstruction." Aerospace Science and Technology 78 (July 2018): 637–47. http://dx.doi.org/10.1016/j.ast.2018.05.004.

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38

Fang, Jiunn, Ijaz H. Parpia, and Stephen R. Kennon. "Sweepline algorithm for unstructured-grid generation on two-dimensional non-convex domains." International Journal for Numerical Methods in Engineering 36, no. 16 (1993): 2761–78. http://dx.doi.org/10.1002/nme.1620361606.

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39

Чернышов, Н. М., and О. В. Авсеева. "AN IMPLEMENTATION OF THE PROCEDURAL GENERATION OF UNSTRUCTURED QUADRANGULAR GRID ALGORITHM BASED ON A STRUCTURED TRIANGULAR GRID IN REGULAR HEXAGONS ON THE PLANE." СИСТЕМЫ УПРАВЛЕНИЯ И ИНФОРМАЦИОННЫЕ ТЕХНОЛОГИИ, no. 4(86) (December 30, 2021): 88–95. http://dx.doi.org/10.36622/vstu.2021.86.4.019.

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Работа посвящена реализации алгоритма процедурной генерации нерегулярной четырехугольной сетки, позволяющего рассчитывать сетку для большой области в реальном времени. При генерации используются кубическая система координат, в которой строится регулярная треугольная сетка для каждой ячейки шестиугольной сетки, процедура релаксации четырехугольной сетки. This work is devoted to the implementation of an algorithm for procedural generation of an unstructured quadrangular grid, which allows to calculate the grid for a large area in real time. When building the grid, a cubic coordinate system, in w

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40

Zhao, Fan, Fugang Zhang, Bo Chen, Chen Qi, and Jian Zhang. "An algorithm for rapid ground surface mesh generation used in complex terrain wind field simulation." IOP Conference Series: Earth and Environmental Science 983, no. 1 (2022): 012094. http://dx.doi.org/10.1088/1755-1315/983/1/012094.

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Abstract In the study of wind engineering problems, it is of considerable importance to obtain accurate surface wind field characteristics. Surface features have significant impacts on the characteristics of small- and micro-scale wind field, so the fine reconstruction of terrain features is the basis of small- and micro-scale wind field simulations. However, since the GIS data obtained by satellite scanning cannot be directly used for CFD numerical simulation, the geographic information data is usually of considerable amount and contains a large number of waste points, thus difficult to be co

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41

Lu, Peng, Nianhua Wang, Xinghua Chang, Laiping Zhang, Yadong Wu, and Hongying Zhang. "An Automatic Isotropic Triangular Grid Generation Technique Based on an Artificial Neural Network and an Advancing Front Method." Mathematical Problems in Engineering 2022 (April 21, 2022): 1–20. http://dx.doi.org/10.1155/2022/8103813.

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To improve the efficiency and automation of the traditional advancing front method (AFM) of unstructured grid generation, a novel isotropic triangular generation technique is developed based on an artificial neural network (ANN). First, some existing high-quality triangular grids are used as data sources, and then an automatic extraction method of training dataset is proposed. Second, the dataset is input into the ANN to train the network by the back-propagation (BP) algorithm, and then some typical patterns are identified through iterative learning. Third, after inputting the initial discreti

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42

Sinhamahapatra, K. P., and N. Singh. "Two-dimensional implicit flux split steady and unsteady Euler calculations using unstructured moving grids." Aeronautical Journal 101, no. 1003 (1997): 131–39. http://dx.doi.org/10.1017/s0001924000066604.

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AbstractTwo-dimensional Euler equations are solved on unstructured triangular meshes using commonly available minicomputers. The driving algorithm is an upwind biased implicit cell-centred finite volume scheme. The spatial discretisation involves a naturally dissipative flux-split approach that sharply captures Shockwaves. The grid generation method uses a type of advancing front technique which triangulates a given set of points. To demonstrate the application, the steady flow results are presented for single and two component aerofoils. The unsteady results are obtained using a dynamic mesh

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43

Ameli, Forough, and Bahram Dabir. "A novel approach for automatic unstructured grid generation for dynamic simulation of heterogeneous reservoirs." International Journal of Oil, Gas and Coal Technology 13, no. 2 (2016): 119. http://dx.doi.org/10.1504/ijogct.2016.078749.

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44

Ameli, Forough, and Bahram Dabir. "A novel approach for automatic unstructured grid generation for dynamic simulation of heterogeneous reservoirs." International Journal of Oil, Gas and Coal Technology 13, no. 2 (2016): 119. http://dx.doi.org/10.1504/ijogct.2016.10000205.

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45

Bahrainian, Seyed Saied, Alireza Daneh Dezfuli, and Aminreza Noghrehabadi. "Unstructured Grid Generation in Porous Domains for Flow Simulations with Discrete-Fracture Network Model." Transport in Porous Media 109, no. 3 (2015): 693–709. http://dx.doi.org/10.1007/s11242-015-0544-3.

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46

Schönauer, W. "Generation of Difference and Error Formulae of Arbitrary Consistency Order on an Unstructured Grid." ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik 78, S3 (1998): 1061–62. http://dx.doi.org/10.1002/zamm.19980781599.

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47

Stupak, Eugeniuš, and Romualdas Baušys. "GENERATION OF THE UNSTRUCTURED FE-GRIDS FOR COMPLEX 2D OBJECTS/NESTRUKTŪRINIŲ BE TINKLŲ GENERAVIMAS SUDĖTINGIEMS DVIMAČIAMS OBJEKTAMS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 6, no. 1 (2000): 17–24. http://dx.doi.org/10.3846/13921525.2000.10531559.

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For the numerical simulation of engineering problems, the finite element method (FEM) is among the most popular approaches. One of the main concerns in a finite element analysis is the adequacy of the finite element grid. The accuracy of the FEM depends on the size, shape and placement of the elements. On the other hand, the total computational cost is determined by the total number of elements in FE model. An increased accuracy can be obtained by the global reduction of the element size, but this can be characterised by drastically increased computational cost. Thus, in many engineering appli

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48

Mlacnik, Martin, Louis J. Durlofsky, and Zoltan E. Heinemann. "Sequentially Adapted Flow-Based PEBI Grids for Reservoir Simulation." SPE Journal 11, no. 03 (2006): 317–27. http://dx.doi.org/10.2118/90009-pa.

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Summary A technique for the sequential generation of perpendicular-bisectional (PEBI) grids adapted to flow information is presented and applied. The procedure includes a fine-scale flow solution, the generation of an initial streamline-isopotential grid, grid optimization, and upscaling. The grid optimization is accomplished through application of a hybrid procedure with gradient and Laplacian smoothing steps, while the upscaling is based on a global-local procedure that makes use of the global solution used in the grid-determination step. The overall procedure is successfully applied to a co

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49

Bocci, A. J. "Recent developments in CFD at ARA." Aeronautical Journal 95, no. 944 (1991): 111–23. http://dx.doi.org/10.1017/s0001924000023708.

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AbstractThe paper discusses recent work in the Theoretical Division at the Aircraft Research Association Limited (ARA) on the modelling of complex configurations, rotors, propulsion and viscous flows. The general features of the ARA multiblock system, which provides a grid generation and Euler flow solution capability for complex configurations, are discussed. Although very successful, the system has various limitations, in particular the tendency for the grid quality to depend on configuration complexity and type. A new multiblock system is being developed which allows regions of unstructured

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50

Martynenko, Sergey I., and Aleksey Yu Varaksin. "Black-Box Solver for Numerical Simulations and Mathematical Modelling in Engineering Physics." Mathematics 11, no. 16 (2023): 3442. http://dx.doi.org/10.3390/math11163442.

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This article presents a two-grid approach for developing a black-box iterative solver for a large class of real-life problems in continuum mechanics (heat and mass transfer, fluid dynamics, elasticity, electromagnetism, and others). The main requirements on this (non-)linear black-box solver are: (1) robustness (the lowest number of problem-dependent components), (2) efficiency (close-to-optimal algorithmic complexity), and (3) parallelism (a parallel robust algorithm should be faster than the fastest sequential one). The basic idea is to use the auxiliary structured grid for more computationa

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